| abstract |
Provided are compounds of the structure: ##STR1## wherein R 1 , R 3 , R 5 and R 6 are independently H, alkyl, aralkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, alkenyl, alkynyl, hydroxy, hydroxyalkyl, alkoxy, mercapto, mercaptoalkyl, alkylthio, amino, alkylamino, aminoalkyl, formyl, carboxy and salts thereof, carbalkoxy, alkanoyl, cyano, nitro, halo, trifluoromethyl, alkylsulfonyl, aminosulfonyl, carbamoyl or cycloalkyl; and n R 7 is H, alkyl, aryl, aralkyl, oxo, or alkanoyl; n wherein at least one of R 1 R 5 or R 6 is an aryl, heteroaryl, or heteroaryl substituted with H, alkyl, halo, amino, trifluoromethyl or cyano. |